CN105735383A - Partial underground obstacle removing construction method capable of reserving structural system - Google Patents
Partial underground obstacle removing construction method capable of reserving structural system Download PDFInfo
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- CN105735383A CN105735383A CN201610176259.0A CN201610176259A CN105735383A CN 105735383 A CN105735383 A CN 105735383A CN 201610176259 A CN201610176259 A CN 201610176259A CN 105735383 A CN105735383 A CN 105735383A
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- construction method
- basement
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- backfill
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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Abstract
The invention provides a partial underground obstacle removing construction method capable of reserving a structural system and relates to the technical filed of building construction. The partial underground obstacle removing construction method is pertinently designed for solving the problems that a large area excavation mode is adopted for existing basement obstacle removing construction, consequently the backfill workload is large, the construction period is long, and the influence on the surrounding environment is large. The partial underground obstacle removing construction method comprises the steps that 1, a basement top plate in a to-be-dismantled position is dismantled, and a main stressed structure is reserved; 2, pile position paying off and pile hole forming are conducted on the basement floor, and the overlapped positions of planned-built pile foundations and existing pile foundations are measured and marked; 3, the dismantled part is subjected to backfill tamping; and 4, hard floor treatment is conducted on the backfilled area. According to the partial underground obstacle removing construction method, large excavation operation in basement obstacle removing construction is avoided, so that dismantling work of an original underground structure is conducted synchronously in the planned-built structure foundation pit earth excavation stage, and thus the construction efficiency is improved.
Description
Technical field
The present invention relates to technical field of building construction, particularly to a kind of construction method of removing obstacles down partly retaining structural system.
Background technology
In tearing old rebuilding construction open, owing to the basement basis of existing building affects the construction of proposed building pile foundation, therefore need to remove existing basement.Conventional basement mainly adopts the mode of excavation to carry out construction of removing obstacles, and then backfill carries out follow-up construction project to be built construction.But, owing to large area excavates workload greatly, long construction period, cost is high.And, large area excavation is bigger on surrounding enviroment impact.Therefore, how providing a kind of without large area excavation and the construction method of removing obstacles down partly of structural system can be retained, thus shortening the construction method of construction period and environmental protection, being that those skilled in the art need badly and solve the technical problem that.
Summary of the invention
Remove obstacles to construct for existing basement and adopt the mode of large area excavation, cause that backfilling working amount is big, long construction period and the problem that surrounding enviroment impact is big, it is an object of the invention to provide and a kind of excavate without large area, short construction period and the construction method of removing obstacles down partly of reservation structural system on the little construction of removing obstacles for basement of surrounding enviroment impact.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of construction method of removing obstacles down partly retaining structural system, comprises the steps:
One, remove the basement roof of position to be torn open, retain main force structure；
Two, on described basement bottom board, carry out stake position unwrapping wire, open stake holes, and to planning to build pile foundation and existing pile foundation coincides position measurement labelling；
Three, dismounting part is carried out backfill rammed earth；
Four, to backfill soil region carry out the process of hard place level ground.
Further, in described step one, main force structure includes outer wall of basement, Vierendeel girder and frame column.
Further, the hydrops in described step 2, in stake holes described in real-time pump drainage.
Further, in described step 3, during stake holes backfill, adopt backfill soil back-filling in layers, and adopt low-dosage cement stabilization.
Further, in described step 3, the cement mixing content that backfill adopts is 3%～5%.
What the present invention was useful has the technical effect that the construction method of removing obstacles down partly of the reservation structural system of the present invention, first, removes the basement roof of position to be torn open, retains main force structure；Secondly, basement bottom board carries out stake position unwrapping wire, opens stake holes, and to planning to build pile foundation and existing pile foundation coincides position measurement labelling；Then, dismounting part is carried out backfill rammed earth；Finally to backfill soil region carry out the process of hard place level ground.The construction method of removing obstacles down partly of this reservation structural system is easy and simple to handle, solves existing basement large area excavation in construction of removing obstacles and pulls out mode, causes that backfilling working amount is big, long construction period and the problem that surrounding enviroment impact is big.This construction method avoid basement remove obstacles construction in heavy excavation operation, adopt the scheme of construction of locally removing obstacles, complete to plan to build the building enclosure construction of pile foundation, the dismounting making original underground structure is operated in ready-built structure pit earthwork excavation stage synchronization implementation, it is stripped out from total construction period of removing obstacles, thus improve efficiency of construction the large area dismounting duration.
Accompanying drawing explanation
Fig. 1 to Fig. 4 is that the step one of construction method is removed obstacles to the flow chart of step 4 in the local of the reservation structural system of the present invention.
In figure:
10-basement roof；20-Vierendeel girder；30-frame column；40-outer wall of basement；50-basement bottom board, 60-backfills soil；70-terrace；80-stake holes.
Detailed description of the invention
A kind of construction method of removing obstacles down partly the retaining structural system present invention proposed below in conjunction with the drawings and specific embodiments is described in further detail.According to description below, advantages and features of the invention will be apparent from.Hereinafter by cited embodiment in conjunction with accompanying drawing, technology contents and the feature of the present invention will be described in detail.Need to additionally illustrating, accompanying drawing all adopts the form simplified very much and all uses non-ratio accurately, only in order to convenience, the purpose aiding in illustrating the embodiment of the present invention lucidly.For sake of convenience, described below " on ", the upper and lower direction of D score and accompanying drawing consistent, but this can not become the restriction of technical solution of the present invention.
Embodiment one
The construction method of removing obstacles down partly of the reservation structural system of the present invention is described in conjunction with Fig. 1 to Fig. 4.
Retain the construction method of removing obstacles down partly of structural system, comprise the steps:
Step one, remove the basement roof of position to be torn open, retain main force structure.Specifically, in pile foundation building enclosure work progress, plan to build place and there is the original basement of large area, it will be clear that affect the part basement structure of pile foundation construction, in order to carry out environmental protection construction, avoid the heavy excavation operation removed obstacles in construction, adopt the scheme of construction of locally removing obstacles, complete to plan to build the building enclosure construction of pile foundation, the dismounting making original underground structure is operated in ready-built structure pit earthwork excavation stage synchronization implementation, it is stripped out from total construction period of removing obstacles, thus improve efficiency of construction the large area dismounting duration.The central principle of the present invention is: the stress system utilizing original structure stable carries out local and removes obstacles construction, the building enclosure construction of ready-built structure pile foundation is completed before excavation removes obstacles construction, the construction period making structural demolition is independent from total construction period of removing obstacles, thus accelerating speed of application.
Certainly, in the work progress removing basement roof 10, to meet normal construction and backfill requirement for degree, retain the main force structure such as Vierendeel girder 20, frame column 30 and outer wall of basement 40, thus ensureing the stability of whole basement structure.
Step 2, basement bottom board 50 carries out stake position unwrapping wire, open stake holes 80, and to planning to build pile foundation and existing pile foundation coincides position measurement labelling.
It is to say, by measuring the position determining ready-built structure pile foundation, basement bottom board 50 structure planning to build pile foundation place is removed in the round mode local of employing.Certainly because after the basement bottom board of original structure 50 perforate subsoil water can on emit, affect normal operation, therefore need to get out drainage equipment, the hydrops in real-time pump drainage stake holes before perforate is constructed, hydrops is pumped out work surface.When construction, if original underground structure periphery is without water-stop curtain, then need periphery is affected by pump drainage subsoil water to assess.Stake footpath according to construction project to be built stake selects the aperture of round, for instance, it is possible to selecting diameter is the round of 100mm, overlaps spacing and be at least 10mm between two adjacent rounds.
Step 3, to dismounting part carry out backfill soil 60 compacting.
Specifically, when stake holes 80 backfills, also include the space between adjacent frame trestle 30 is backfilled, adopt backfill soil back-filling in layers, and adopt low-dosage cement stabilization.In order to ensure backfill effect, the cement mixing content that backfill adopts is 3%～5%.Certainly, backfill construction should be noted that the backfill degree of compaction of backfill soil and strengthening quality meet the requirements, and one is the earth bearing strength requirement meeting the loads such as Construction traffic, and two is the soil body stability requirement meeting the ready-built structure pile foundation construction stage.
Step 4, carry out hard place level ground 70 and process backfilling soil region, if planning to build the situation that overlapping occurs in pile foundation with existing pile foundation, then need to take pile pulling mode to carry out construction of removing obstacles, region of removing obstacles carried out backfill soil and reinforces closely knit, preparing the pile foundation construction of follow-up ready-built structure.
In sum, the construction method of removing obstacles down partly of the reservation structural system of the present invention, first, remove the basement roof of position to be torn open, retain main force structure；Secondly, basement bottom board carries out stake position unwrapping wire, opens stake holes, and to planning to build pile foundation and existing pile foundation coincides position measurement labelling；Then, dismounting part is carried out backfill rammed earth；Situation about overlapping as planned to build pile foundation to have with existing pile foundation adopts pile pulling mode to remove；Finally to backfill soil region carry out the process of hard place level ground.The construction method of removing obstacles down partly of this reservation structural system is easy and simple to handle, solves existing basement large area excavation in construction of removing obstacles and pulls out mode, causes that backfilling working amount is big, long construction period and the problem that surrounding enviroment impact is big.
Foregoing description is only the description to present pre-ferred embodiments, not any restriction to the scope of the invention, any change that the those of ordinary skill in field of the present invention does according to the disclosure above content, modification, belongs to the protection domain of claims.
Claims (5)
1. the construction method of removing obstacles down partly retaining structural system, it is characterised in that comprise the steps:
One, remove the basement roof of position to be torn open, retain main force structure；
Two, on basement bottom board, carry out stake position unwrapping wire, open stake holes, and to planning to build pile foundation and existing pile foundation coincides position measurement labelling；
Three, dismounting part is carried out backfill rammed earth；
Four, to backfill soil region carry out the process of hard place level ground.
2. the construction method of removing obstacles down partly of reservation structural system described in 1 as requested, it is characterised in that in described step one, main force structure includes outer wall of basement, Vierendeel girder and frame column.
3. the construction method of removing obstacles down partly of reservation structural system described in 1 as requested, it is characterised in that the hydrops in described step 2, in stake holes described in real-time pump drainage.
4. the construction method of removing obstacles down partly of reservation structural system described in 1 as requested, it is characterised in that in described step 3, during stake holes backfill, adopt backfill soil back-filling in layers, and adopt low-dosage cement stabilization.
5. the construction method of removing obstacles down partly of reservation structural system described in 4 as requested, it is characterised in that in described step 3, the cement mixing content that backfill adopts is 3%～5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176259.0A CN105735383A (en) | 2016-03-25 | 2016-03-25 | Partial underground obstacle removing construction method capable of reserving structural system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176259.0A CN105735383A (en) | 2016-03-25 | 2016-03-25 | Partial underground obstacle removing construction method capable of reserving structural system |
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| CN105735383A true CN105735383A (en) | 2016-07-06 |
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| CN201610176259.0A Pending CN105735383A (en) | 2016-03-25 | 2016-03-25 | Partial underground obstacle removing construction method capable of reserving structural system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522572A (en) * | 2016-11-14 | 2017-03-22 | 上海市基础工程集团有限公司 | Construction method for constructing large-space underground channel in limited space of historical protection building |
| CN112538981A (en) * | 2020-11-26 | 2021-03-23 | 上海建工四建集团有限公司 | Old building basement obstacle removing and new building pile foundation synchronous construction method |
| CN113322965A (en) * | 2021-06-11 | 2021-08-31 | 中国建筑第八工程局有限公司 | Deep foundation clearing construction method for near-subway deep foundation pit |
| CN116240883A (en) * | 2023-02-21 | 2023-06-09 | 中铁二局集团有限公司 | Stirring pile construction method for penetrating existing underground reinforced concrete structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761068A (en) * | 2009-11-10 | 2010-06-30 | 同济大学 | Box-raft pressure-bearing type foundation underpinning and construction reinforcing method for tunnel across pile foundation of bridge above river |
| JP2013249709A (en) * | 2012-06-04 | 2013-12-12 | Taisei Corp | Pile reinforcing structure for existing building, and constructing method thereof |
| CN104060615A (en) * | 2014-06-05 | 2014-09-24 | 江苏省华建建设股份有限公司 | Construction method utilizing newly-built supporting structure of foundation pit to eliminate underground obstacle |
-
2016
- 2016-03-25 CN CN201610176259.0A patent/CN105735383A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761068A (en) * | 2009-11-10 | 2010-06-30 | 同济大学 | Box-raft pressure-bearing type foundation underpinning and construction reinforcing method for tunnel across pile foundation of bridge above river |
| JP2013249709A (en) * | 2012-06-04 | 2013-12-12 | Taisei Corp | Pile reinforcing structure for existing building, and constructing method thereof |
| CN104060615A (en) * | 2014-06-05 | 2014-09-24 | 江苏省华建建设股份有限公司 | Construction method utilizing newly-built supporting structure of foundation pit to eliminate underground obstacle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522572A (en) * | 2016-11-14 | 2017-03-22 | 上海市基础工程集团有限公司 | Construction method for constructing large-space underground channel in limited space of historical protection building |
| CN106522572B (en) * | 2016-11-14 | 2019-02-19 | 上海市基础工程集团有限公司 | Large space underpass construction method is constructed in the historical protective buildings object confined space |
| CN112538981A (en) * | 2020-11-26 | 2021-03-23 | 上海建工四建集团有限公司 | Old building basement obstacle removing and new building pile foundation synchronous construction method |
| CN113322965A (en) * | 2021-06-11 | 2021-08-31 | 中国建筑第八工程局有限公司 | Deep foundation clearing construction method for near-subway deep foundation pit |
| CN116240883A (en) * | 2023-02-21 | 2023-06-09 | 中铁二局集团有限公司 | Stirring pile construction method for penetrating existing underground reinforced concrete structure |
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Application publication date: 20160706 |